Letter 20001

Hard Chrome On Tungsten [New Hampshire] 

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We have a direct hard chrome plate requirement.010 thick on tungsten. Does anyone have a reliable method to ensure good adhesion that wll withstand post grinding?

David P.Ferrairo
- Seabrook, N.H,. U.S.A.

Hello, Mr. Ferrairo--

There is no question that getting good adhesion onto tungsten is difficult. However, the ASM Handbook, Vol.5, Surface Engineering has a chapter on activating and plating refractory metals like tungsten.

 
Ted Mooney, P.E.
finishing.com Inc. - Brick, NJ

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